Loma IQ2 Service Manual page 41

FILTER RESISTOR VALUE Vs SPEED THROUGH THE
APERTURE for FREEFALL & PHARMACEUTICAL
The table shows the standard range of detectors apertures.
The dimensions are shown in millimetres. To convert to inches divide by 25.4 and
round to nearest whole inch.
The speed is shown in metres per minute. To convert to feet per minute multiply by
3.2808.
The resistor values 68 to 750 are in KΩ Ω Ω Ω .
The resistor values 1 and 1.5 are in MΩ Ω Ω Ω .
SMALLEST APERTURE DIMENSION or DIAMETER FREEFALL
Filter 75 Contained Field
Value all aperture
diameters
68 165
120 93
150 75
180 63
220 51
330 34
470 24
750 15
1 11
1.5 7
To calculate the speed through the aperture for gravity fed freefalling product, to
ensure the correct filter resistor is selected and fitted the following formula can
be used.
SPEED metres per minute = 60 X √ 20 X PRODUCT DROP HEIGHT in metres
Module 7026
PHARMACEUTICAL APERTURE
freerun - maximum speed
Filter Value
68
120
150
180
220
330
470
750
1
1.5
freerun - maximum speed
100 125
209 220 275
117 125 156
95 100 125
79 83 104
64 68 85
43 45 56
30 32 40
18 20 25
14 15 18
9 10 12
Configuration and Set up Information
HEIGHT
20 38
68 82
39 46
31 37
26 31
26 25
14 17
9 11
6 7
4 5
3 3
150 175 200
330 385 441
187 218 250
150 175 200
124 145 166
103 119 136
68 79 90
48 55 63
30 34 39
22 26 29
15 17 20
225 250 275 300
496 551 606 661
281 312 343 375
225 250 275 300
187 208 229 249
153 170 187 204
102 113 124 136
71 79 87 95
44 49 54 59
33 37 40 44
22 25 27 30
325
716
406
325
270
221
147
103
64
48
32
5-19